Bind him with and let him play
Imagine your partner standing in front of you attached to this cock-to-wrist restraint. You could tell your partner to masturbate in front of you and watch as he tries to get even one good stroke from his penis. At the same time that he tries, the restraint will pull on his cock and balls. Imagine the control, and fun, that you would have. The more he tries to please you, the more you'll actually be pleased.
Cock-to-Wrist Restraints specifications
The cuffs are made of a high quality leather and are locked to the ball weight using eyelets. The weight pulls about 16oz on the balls and opens using an included allen wrench. One of the best parts, literally, is that each of these pieces can be used separately from each other.